可以用icc编译cython吗？

Question

我正在尝试使用icc编译器在Ubuntu 14.04上从源代码构建cython,因为我的python是用Intel icc编译器编译的.

当我尝试使用pip3安装cython安装cython然后运行cython时出现以下错误

Traceback (most recent call last):
File "/usr/local/bin/cython", line 9, in <module>
load_entry_point('Cython==0.24', 'console_scripts', 'cython')()
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 351, in load_entry_point
return get_distribution(dist).load_entry_point(group, name)
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2363, in load_entry_point
return ep.load()
File "/usr/lib/python3/dist-packages/pkg_resources.py", line 2088, in load
entry = __import__(self.module_name, globals(),globals(), ['__name__'])
File "/usr/local/lib/python3.4/dist-packages/Cython/Compiler/Main.py", line 28, in <module>
from .Scanning import PyrexScanner, FileSourceDescriptor
ImportError: /usr/local/lib/python3.4/dist-packages/Cython/Compiler/Scanning.cpython-34m.so: undefined symbol: __intel_sse2_strchr 

如何使用icc编译器从源代码安装cython？

我试过这个并没有用

从cython目录(从github下载)

python3.4 setup.py CC = icc

我收到以下消息 -

/home/aa/libPython/cython/Cython/Distutils/build_ext.py:20: UserWarning:    
Cython.Distutils.build_ext does not properly handle dependencies and is deprectated. Use Cython.Build.build_ext instead.
"Cython.Distutils.build_ext does not properly handle dependencies "
 Unable to find pgen, not compiling formal grammar.
 invalid command name 'CC=icc'

Answer 1

CC=icc用icc构建是不够的.您还应该与icc链接(/sf/answers/762423511/ ; icc会将其内部库添加到ELF文件中),因此可以找到setup.py的链接器变量名称,LD并将其设置为icc也是LD=icc(默认可能是gcc).

实际上是LINKCC- https://github.com/cython/cython/blob/970c2fc0e676ca22016e14147ada0edba937dc6b/Cython/Build/BuildExecutable.py

CC = get_config_var('CC', os.environ.get('CC', ''))
CFLAGS = get_config_var('CFLAGS') + ' ' + os.environ.get('CFLAGS', '')
LINKCC = get_config_var('LINKCC', os.environ.get('LINKCC', CC))

那么,使用icc进行cython的正确构建应该是CC=icc LINKCC=icc,不知道应该如何将变量传递给setup.py,检查如何告诉distutils使用gcc？或尝试

CC=icc LINKCC=icc python3.4 setup.py

更新:根据gansub的消息," LDSHARED=icc"env.变量将有助于构建cython:"你需要设置环境变量LDSHARED = icc" - http://chat.stackoverflow.com/transcript/message/31231907#31231907和/sf/answers/2653995921/

来自Syrtis Major的更新:12月15日,Nguyen,Loc Q(英特尔)发表文章"Cython*中的线程并行" https://software.intel.com/en-us/articles/thread-parallelism-in-cython 2016年推荐LDSHARED="icc -shared" CC=icc:

要显式使用Intel icc编译此应用程序,请使用以下命令执行setup.py文件:

 $ LDSHARED="icc -shared" CC=icc python setup.py build_ext --inplace